Bug ID 558939: Checking info on error code 24577 for APM session termination

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP APM(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2, 12.1.0, 12.1.1, 12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,, 14.0.0,,,,,, 14.0.1,

Opened: Nov 18, 2015

Severity: 4-Minor


Server logs show error code 24577 if client (edge or browser) contacts server with invalid session information. ErrInvalidSession : Session ID is invalid. Error Code : 24577 Recommendation : Disconnect and connect again


Client needs to establish new session.


Edge or browser client connects to APM with invalid session ID.


Reconnecting usually corrects the invalid session problem. F5 Support has also found that in some cases this problem can occur due to malfunctioning SSL connections from continuous client-side checks (Antivirus, Firewall, etc). In this case, the VPN disconnects will be accompanied by SSL handshake or connection errors in the LTM log file at /var/log/ltm. Modifying the clientSSL profile to disable certain ciphers or disabling the continuous checks may resolve the problem.

Fix Information


Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips